| slovo | definícia |
risc os
(foldoc) | RISC OS
(Reduced Instruction Set Computer Operating
System) The operating system originally developed by {Acorn
Computers} for their Archimedes family of {personal
computers}.
RISC OS replaced the Arthur operating system used on the
first Archimedeses.
It is written in ARM assembly code and distributed on
ROM so it takes up no disk space and takes no time to load.
It supports cooperative multitasking with memory management
and includes a graphical user interface or "WIMP". It is
written in a highly modular style and makes extensive use of
vectors so it is easy to modify and extend by loading new
modules in RAM. Many system calls (called "SWIs" -
software interrupts) are available to application programmers
and some of these are available as user comands via a built-in
command-line interpreter. RISC OS also supported {outline
fonts} when only bitmap fonts were available on most other
platforms.
Following the virtual demise of Acorn, development of RISC OS
4 was taken over by RISCOS Ltd on 1999-03-05 and released on
1999-07-01.
(2004-09-21)
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